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Water Quality Monitoring in the Source Water Areas for NYC PHASE I Monitoring Sites

Site 53 - Stone Hill River near Bedford Hills - CROSTONE - IMAGE Gallery Watershed Characteristics - Nutrient Chemistry - Molecular Tracers - Macroinvertebrates

Watershed Land Use/Land Cover Characteristics - Data Methodology Description Latitude(dd): 41.245949 Longitude(dd): -73.669116 Watershed Area: 90.58 km2 ------------------------------------------------------------------------------------------------ East of Hudson Land Use/Cover Map Impervious Agriculture Forest Water Wetland 7.01% 9.30% 81.40% 1.60% 9.10% -------------------------------------------------------------------------------------------------   1990 2000 Total Population 3020 3131 Population Density (ind./km2) 87.39 90.58 -------------------------------------------------------------------------------------------------   2000 2001 2002 # of SPDES Dischargers 0 0 0 Total Annual Volume (normalized for watershed area) 0.00 cm 0.00 cm 0.00 cm Ions, Nutrients, DOC/BDOC, and Particulates - click here for abbreviations/units Sampling Dates and Discharge (Q) - Realtime Flow Monitoring   Ions/Nutr & DOC/BDOC Organic Particles Date Q - m3/s Date Q - m3/s 2000 12SEP00 0.0579 12SEP00 0.0579 2001 05SEP01 0.0325 05SEP01 0.0325 2002 14AUG02 0.0318 14AUG02 0.0318 Data Table - Methodology   2000 QUAL 2001 QUAL 2002 QUAL pH 8.2   8.2   7.7   ALKL 70   72   76   COND 277   306   310   CA 26   .   .   MG 8   8.5   9.3   NA 15   18   16   K 2   2.4   2.7   CL 34   41   38   SO4 13   16   14   NH4N 0.007 B 0.003 B 0.006 B NO3N 0.4   0.4   0.6   ORGN 0.1   0.2   0.2   SKN 0.1   0.2   0.2   TKN 0.2   0.2   0.2   SRP 0.012   0.015   0.019   TDP 0.016   0.017   0.019   TP 0.05   0.02   0.02   DOC 2363   3397   1947   BDOC .   249   161   TSS 0.7 B 1 B 1.9   TSS05 0.4 B 0.7   0.9   TSS10 0.06 B 0.3   0.2   TSS20 0.2   0.5   0.5   VSS 0.2 B 0.4   0.9   VSS05 0.1 B 0.3 B 0.5   VSS10 0.011 B 0.1   0.08   VSS20 0.07   0.2   0.2     Molecular Tracer Analysis - click here for abbreviations/units Sampling Dates and Discharges (Q) - Realtime Flow Monitoring   Summer Baseflow Winter Baseflow Date Q - m3/s Date Q - m3/s 2000 12SEP00 0.0579 2001 05SEP01 0.0325 --- --- 2002 12AUG02 0.0248 --- --- 2003     --- --- Data Table - Methodology   2000(SB) QUAL 2001(WB) QUAL 2001(SB) QUAL 2002(WB) QUAL 2002(SB) QUAL 2003(WB) QUAL FLU 0.0011 HE .   0.0007 E .   0.0013 E .   PHE 0.004 HE .   0.003 E .   0.003 E .   ANT 0.004 HE .   0.0009 E .   0.0007 E .   2MP 0.002 HE .   0.011 E .   0.012 E .   1MP 0.0006   .   0.004 E .   0.007 E .   FLR 0.003 HE .   0.006 E .   0.01 E .   PYR 0.003   .   0.03 E .   0.05   .   BAA 0.00018 HE .   0.0017 E .   0.001 E .   CHR 0.0004 HE .   0.0011 E .   0.0013 E .   BBF 0.0002 HE .   0.0012 E .   0.0012 E .   BKF 0.0003 HE .   0.0008 E .   0.0005 E .   BAP 0.0013 HE .   0.001 E .   0.0011 E .   HHCB 0.003 HE .   0.003 E .   0.002 E .   AHTN 0.0006 HE .   0.004 E .   0.006 E .   CAF 0.003   .   0.003 E .   0.007 E .   bCOP 0.008   .   0.009 E .   0.009 E .   EPI 0.008   .   0.0019 E .   0.003 E .   CHO 0.3   .   0.4   .   0.3   .   aCOP 0.06   .   0.06   .   0.06   .   aONE 0.006   .   0.017   .   0.008 E .   bONE 0.03 HE .   0.014   .   0.02 E .   SNOL 0.05 HE .   0.05   .   0.05   .     Benthic Macroinvertebrates - Methodology Water Quality Score - WQS Definition